Product Capsules Colorimeters. Catalog available on company's "Spectronic 20" colorimeter cited as providing quick, dependable photometric readings. Features 20 ηΐμ band pass. Meter gives exact per cent transmission, or optical density. Bausch & Lomb Optical Co., 60920 St. Paul St., Rochester 2, Ν. Υ. 4th Cover
Comparators. Circle 62A-3 for hand book, "Modern p l l and Chlorine Con trol." Gives theory and application of pH control, illustrates and describes full Taylor line including light-weight
comparators. W. A. Taylor & Co., 7306 York Rd., Baltimore 4, Md. 62A-3 Cup Sink Drains. Brochure avail able on polyethylene corrosion-resistant cup sink drain. Available in 3" X 6" standard oval shape, drain is strong, re silient, impermeable and non-oxidizing. American Agile Corp., P. O. Box 168, Bedford, Ohio 38A Determinators, Sulfur. Circle 34A for 16-page catalog that illustrates and describes both sulfur and carbon de-
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Β FISHER NEFLU0R0-PHOTOMETER NEFLUORO-PHOTOMETER FOR L A B O R A T O R I E S I N E V E R Y A R E A O F C H E M I S T R Y
The three-purpose Fisher Nefluoro-Photometer Nefluoro- Photometer combines in one easy-to-use instrument a colorimeter, nephelometer and fluorometer for rapid and precise determination of a wide variety of organic, inorganic, synthetic and biological materials. It is designed for simplicity and flexibility to fill present needs and to grow with your laboratory! AS A COLORIMETER Light of specified wave lengths is absorbed by solu tion. Amount absorbed is measured and related to concentration.
AS A FLUOROMETER Light of one wavelength causes some substances to fluoresce. The fluorescent light is measured and re lated to the concentration.
AS A NEPHELOMETER Dispersed particles scatter incident light, which is measured at right angles and related to particle con centration.
available
on request
Illustrated how-to b o o k l e t s h o w i n g ver s a t i l i t y of Fisher N e fluoroPhotometer. 100 FISHER BLDG., PITTSBURGH 19, PA. Bl7*b
E. M A C H L E T T & S O N
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DIVISION OF
FISHER SCIENTIFIC COMPANY 633 G R E E N W I C H S T R E E T · N E W Y O R K , Ν . Υ .
terminators and a complete line of accessory equipment and supplies. Harry W. Dietert Co., 9330 Roselawn, Detroit 4, Mich. 34A Dispensers, Fluid. Size and price in formation available on finger-tip fluid dispenser. Can be drop-calibrated for quantitative delivery of millimeter amounts. Constructed of stainless steel and anodized nickel-acetate sealed alu minum components. Palo Laboratory Supplies Inc., 81 Reade St., Ν. Υ. 7, Ν. Υ. 70Α Electrometers. Circle 64A-2 for bulle tin on the Curtiss-Wright dynamic ca pacitor electrometer. Provides direct reading as low as 10 _ l e amp. 10, 100 and 1,000 mv ranges plus recorder out put. Accuracy: 2%. Electronics Div., Curtiss-Wright Corp., Carlstadt, N. J. 64A-2 Evaporators. Circle 15A for bulletin on the Rinco multiple evaporator de signed to provide large scale, rapid evaporation without elevation of tem peratures. Capacity: 2000 ml. Aloe Scientific, Div. of A. S. Aloe Co., 5655 Kingsbury, St. Louis 12, Mo. 15A Flowmeters. Circle 44A for bulletin on predictability flowmeters and guards. Instrument enables direct calculation of calibration curve. Manostat Corp., 20-26 N. Moore St., N. Y. 13, Ν. Υ. 44A Fluorimeters. Klett fluorimeters are designed for the rapid and accurate determination of thiamin, riboflavin, and other substances which fluoresce in solution. Klett Manufacturing Co., 179 East 87th St., Ν. Υ., Ν. Υ. 6 5 Α - 2 Funnels. Circle 67A-1 for bulletin on loose plate, table type Buchner style funnel cited as being light weight and compact. Coors Porcelain Co., Golden, Colo. 67A-1 Furnaces. Circle 45A for bulletin on tube furnace for temperatures to 2600° F. 12" chamber. All temperature con trol and indicating devices are located in the furnace base. Hevi-Duty Elec tric Co., Milwaukee 1, Wis. 45A Furnaces. Circle 66A-2 for data on electric furnace for plant or laboratory. Variable temperature control allows selection and automatic holding of any temperature from 350° F. to 1850° F. Chamber size. 43/„" X 4 7 / X 6". Thermo Electric Manufacturing Co., 478 Huff St., Dubuque, Iowa 6 6 A - 2 Gamma Ray Spectrum Recorders. Bulletin available on automatic Gamma ray spectrum recorder featuring auto matic single or repetitive scan, front panel selection of five scanning speeds, (Continued on page 89A)
For further information, circle number 88 A on Readers' Service Card, page 99 A 88 A
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ANALYTICAL CHEMISTRY
